Truck-pedestal



J. B. WEAVER AND P. PARKE.

TRUCK PEDESTAL.

APPLICATION FILED- DEC-10, 1920.

1 100,586. I Patented Dec. 20, 1921.

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JOSEPH B. WEAVER AND PETER PARKE, OF CHICAGO, ILLINOIS, ASSIGNORS TO THEPULLMAN COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION ILLINOIS.

TRUCK-PEDESTAL.

Specification of Letters Patent.

Patented Dec. 20, 1921.

Application filed December 10, 1920. Serial No. 429,669.

To all whom it may concern Be it known that we, Josnrr-r B. WEAVER andPnrnn PARKE, citizens of the United States, residing at Chicago, in thecounty of Cook and State of Illinois, have invented certain new anduseful Improvements in a Truck-Pedestal, of which the following is aspecification.

This invention relates to railway rolling stock, and pertainsparticularly to improvements in the construction of pedestals designedfor incorporation in car trucks and the like. The present invention isdirected primarily to the provision of a construction whereby thepedestal may be formed entirely from commercial shapes, viz, flat platesand rolled bars, to provide a pedestal construction of adequatestrength, and, on account of being made of rolled steel, of greaterflexibility than the cast pedestals usually employed in passengerequipment, thereby limiting the liability to breakage under the constantshocks to which pedestals in service are subjected. Another object ofthe invention is to provide a pedestal construction in which the journalbox guides, subject to wear, may be readily demounted for replacementwhen Worn, and further to provide a pedestal which may be manufacturedin quantities at a very low cost and in different weights by the use ofthe same forming tool. To attain these objects certain newconsiderations must be met in order to provide for the disposal ofmaterials to contribute the necessary strength at the desired points, toprovide for the mounting of the pedestal in the truck and to provide forthe attachment of other members of the truck assembly in operativeassociation with the pedestal.

Other and further objects and advantages of the invention will bepointed out hereinafter by reference to the illustrative form' ourinvention Fig. i) is a side View of the same, but showing the parts inassociation with a wh e el piece of the truck frame;

big. 4 is a horizontal section taken substantially on line %4 of Fig. 2.

Referring to the drawings by means of the reference characters applied,let it be understood that the numeral 1 designates the wheel piece of arailway truck frame, with which are associated the journal box in which.the wheels are mounted, and here illustrated by the journal box 2. Asis well known in the art, it is the function of the truck pedestal toconnect the journal box with the truck frame so that the longitudinalmovement imparted to the latter will be transmitted to the former toadvance the wheels in the progressive movement of the car. Incident tothis function, the pedestals must allow for the necessary relativevertical movement of the journal box and truck frame incident tocompression and extension of the springs supporting the latter. In ourimproved pedestal construction, for the attainment of the advantages andobjects indicated above, we construct the pedestal of two major membersformed from commercial plates of proper material and thickness. One ofthese members is the suspension plate 1, and the other is the guideplate 5. The suspension plate l preferably is formed of considerablyheavier stock than the guide plate 5, as it functions as the supportingmember whereby the pedestal is attached to the truck frame, in additionto its function as a lateral retaining member for the journal box; whilethe function of the guide plate 5 is to cotiperate with the plate t inthe lateral retention. of the journal box and in the proper placing andbracing of the pedestal on the truck portion on which it is mounted.These plate members 4: and 5, obviously, may be made from any desiredweight of stock, so that a given set of dies may be utilized to producepedestals having any desired variation in weight. These plate membersare of inverted U shape, their downwardly extending portions P and 5providing pedestal jaws, and the transverse portions connecting saidjaws forming arches whereby the pedestal maybe mounted on the truckframe. As .will be observed in Fig. 2, the arch of the supporting plateis of considerably greater height than that of the guide plate, so thatit will extend a considerable distance across aside face of the wheelpiece, and it is "drilled at. appropriate points to .provioe aperturesfor the seating of the con- J nection bolts P. The arch of the guideplate, on the other hand, is of proper height to extend partially acrossthe. opposite slde face of the w ieel piece, but it is shaped withreference tothe locationof the apertures 45 so as to give the necessaryclearances for the heads or nuts of the connection bolts. The two platemembers thus formed are con neoted by top spacers '7 and bottom spacershaving their arms 7 connected to the inner faces of the plate members 4Cand 5 by rivets, and having their transverse webs 7 disposedhorizontally and properly spaced with reference to the arch and'jawportions to constitute positioning members for determining the extent towhich the wheel piece may be i inserted between the plate members. Thebottom spacers 8 are mounted by rivets at the lower extremities of thepedestal jaws, being connected to the plate members by lateral flanges 8and having lower horizontal flanges 8 These flanges are .suitablydrilled for the: mounting of. bolts whereby the ti'e-stripmay beconnected to the pedestale in the customary fashion. In order toincrease the stability of the connection between the plate members,through bolts 10 may be inserted through them and through the lateralflanges of the upper spacers adjacent the horizontal flanges 7 and drawnup tightly by nuts on lock washers; and to close the joints and providedesirable lateral' bearing above the pointiof connection,

the spacers may bejoined to the plate 'members by electric welds asillustrated at W. With the parts assembled. in this manner it will beobserved that the plate members constitute depending abutments spacedapart transversely and longitudinally. The outside plate member 4:constituting the main attaching member for the pedestal to the truckframe may be of greater thickness than the inner plate member 5, whichfunctions principally as a tie plate, thereby affecting economy inconstruction. Upon these depending jaws are mounted the guides 11. Theseare formed of sections of bar material by the simple operations ofshearing them off in proper lengths and drilling the rivet holes throughjigs or with gang drills. The section of material employed for these 7guides is preferably a shallow angle having one relatively heavy and onerelatively light flange, so thatv the latter will constitute anattaching flange 11 adapted to abut theouter face of the plate memberson which it is mounted, and the former will constitute wear flanges llextending toward each other across the vertical margins of the platemempedestal jaws.

S. The top spacers are ll shaped members journal box, and they arepositioned parallel so that the journal box will be permitted thenecessary vertical movement between the The contact members are madedemountable so that by the simple,

operation of cutting off the rivets, the members when worn canbe'demounted for re- '75 placement. Due to the-nature ofthe construction, however, with a givensize of plate 7 members, pedestals maybe constructed for the accommodation of various sizes of journal boxes,simply by varying the relative spacing of the opposite guides on thepedestal jaws. This spacing, obviously, is determined by the location ofthe fastenings 12 whereby the guides are secured in place.

When the pedestal is mounted in the truck, the through bolts l arepassed through the apertures of I the suspension plate and throughsuitable holes drilled in the. wheel piece 1, and drawn up by nuts 6 sothat thesuspension plate has close abut- 9 0. l ment with the outer faceof the wheel piece.

' plate with the outer face of the wheel piece,

regardless of variations in width of wheel piece and without anydistortion of the portions on opposite sides of the wheel piece, therebycontributing to the security and immobility of the mounting. The upperspacers cooperate with the lower steer the wheel piece to contribute thesame results, and to maintain the proper clearance below the wheel piecefor the operation of the end 3 of the equalizen'and may be secured tothe wheel piece by means of vertical bolts 14. The equalizer extendsthrough the spacebetween the upperfandlower spacers and the platemembers to its intended'position on top of the journal box, and the formand disposal of the upper spacers is such as to permlt the necessaryvertical play of the equalizers.

WVith the parts in place, the tie strip 13 is connected to the lowervspacers 8 bybolts, and to the wheel piece, forming a lower retainingmember for the pedestal jaws.

We have specified above some of the various advantages of thisconstruction, and it is believed unnecessaryto gofarther into a.description of its operation. It. is to be ob-.

served, however, that in addition to the 'advantages hereinbeforeindicated, the construction permitsthe disposal of all fastenings insuch relationship as to utilize their greatest effective strength;. thatthe material of the plate members is disposed inthe line of thrust fromthe journal box, and due to the integral unity of the jaws and archportions, the stresses are not transmitted across joints. Furthermore,the parts subjected to the greatest wear are demountable, so that theymay be replaced when worn.

We claim:

1. In a truck construction, a pedestal comprising a front suspensionplate having an upstanding connection arch adapted for connection to thetruck wheel piece and depending jaw portions, a relatively thinner reargulde plate having an upstanding arch portion and depending jawportions, spacer members connecting said plates and means connecting thesuspension plate to the wheel piece to support the guide plate.

2. In a truck construction, a pedestal comprising a suspension platehaving an up standing connection arch and depending jaw portions, meansfor attaching the connection arch to the truck wheel piece, a guideplate having depending j aw .portions, lower spacer members connectingthe jaw portions of said plates and affording attaching points for thetie strip, and upper spacer members connecting said plates and affordingabutments for the wheel piece, the guide plate being supported solelythrough its connection with said spacer members and the suspensionplate.

8. In a truck construction, a pedestal comprising a flat suspensionplate and a relatively thinner guide plate, the former having anupstanding connection flange for attachment to the truck wheel place andthe latter being free from the wheel p ece, both said plates includingdepending aw portions, and spacers connecting said plates, whereby theguide plate is supported on the wheel piece by the connection flange.

4. In a truck construction, a pedestal comprising a fiat suspensionplate and a flat guide plate, the former having an upstanding connectionflange for attachment to the truck wheel piece, both said plates including depending jaw portions, spacers connecting said plates, and guldesdemountably supported on said jaw portions and overlapping the innermargins thereof.

5. In a truck construction a pedestal com prising a suspension plate anda guide plate disposed in parallel relationship, said suspension plateincluding an upwardly extending connection arch and depending of thesuspension plate, spacers connecting said lates, and bar sectionsmounted in paral el relationship on the respective jaws for cooperationwith a journal box, said bar sections having transversely directedportions for cooperation with the journal box guides.

7. In atruck construction a pedestal comprising a guide plate and arelatively heavier suspension plate, said suspension plate having anupstanding connection arch arranged to abut the wheel piece, fasteningsinsertible through the connection arch and wheel piece, the guide platehaving an upstanding portion arranged for association with the oppositeside of the wheel piece and shaped to clear said fastenings, andtransverse connections maintaining said plates in parallel relationship.

8. In a truck construction a pedestal comprising a fiat guide plate anda relatively heavier flat suspension plate, said suspension plate havingan upstanding connection arch arranged to abut the wheel piece,fastenings insertible through the connection arch and wheel piece, theguide plate having an upstanding portion arranged for association withthe opposite side of the wheel piece and shaped to clear saidfastenings, transverse connection maintaining said plates in parallelrelationship, and vertical guides carried by the respective plates forcooperation with a journal box.

In testimony whereof we have hereunto subscribed our names in thepresence of two subscribing witnesses.

JOSEPH B. WEAVER. PETER PARKE.

Witnesses:

E. A. BAcKLiN, W. M. MARTINSON.

